docs(01.1-02): complete tRPC foundation plan

Tasks completed: 2/2
- Install tRPC dependencies and create router foundation
- Define procedures matching HTTP endpoints with tests

SUMMARY: .planning/phases/01.1-hexagonal-architecture/01.1-02-SUMMARY.md

.planning/phases/01.1-hexagonal-architecture/01.1-02-SUMMARY.md

@@ -0,0 +1,107 @@
+---
+phase: 01.1-hexagonal-architecture
+plan: 02
+subsystem: api
+tags: [trpc, zod, rpc, type-safety]
+
+# Dependency graph
+requires:
+  - phase: 01.1-01
+    provides: EventBus interface type
+provides:
+  - tRPC router with health/status procedures
+  - AppRouter type for client type-safety
+  - Zod schemas for runtime validation
+affects: [01.1-06-cli-trpc-integration, future-webui]
+
+# Tech tracking
+tech-stack:
+  added: [@trpc/server, @trpc/client, zod]
+  patterns: [tRPC caller factory for testing, Zod output validation]
+
+key-files:
+  created: [src/trpc/router.test.ts]
+  modified: [src/trpc/router.ts, src/trpc/index.ts]
+
+key-decisions:
+  - "Use Zod for output validation to ensure runtime type safety"
+  - "Procedures return same shape as existing HTTP endpoints for consistency"
+
+patterns-established:
+  - "tRPC procedures use ctx for dependency injection"
+  - "createCallerFactory pattern for unit testing procedures"
+
+# Metrics
+duration: 6min
+completed: 2026-01-30
+---
+
+# Phase 01.1 Plan 02: tRPC Foundation Summary
+
+**Type-safe tRPC router with health and status procedures, Zod validation, and comprehensive tests**
+
+## Performance
+
+- **Duration:** 6 min
+- **Started:** 2026-01-30T12:52:38Z
+- **Completed:** 2026-01-30T12:58:19Z
+- **Tasks:** 2
+- **Files modified:** 3
+
+## Accomplishments
+
+- Added health procedure returning { status, uptime, processCount }
+- Added status procedure returning { server: {startedAt, uptime, pid}, processes: [] }
+- Zod schemas for runtime output validation
+- AppRouter type exported for client type-safety
+- 16 tests covering procedures and schema validation
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Install tRPC dependencies and create router foundation** - `437e76e` (done in prior session as part of Plan 01.1-01)
+2. **Task 2: Define procedures matching HTTP endpoints with tests** - `551e516` (feat)
+
+**Plan metadata:** (this commit)
+
+_Note: Task 1 was completed as part of Plan 01.1-01 execution. This plan focused on Task 2._
+
+## Files Created/Modified
+
+- `src/trpc/router.ts` - Added appRouter with health/status procedures, Zod schemas
+- `src/trpc/index.ts` - Export AppRouter type and schemas
+- `src/trpc/router.test.ts` - 16 tests for procedures and validation
+
+## Decisions Made
+
+1. **Zod for output validation** - Ensures runtime type safety; procedures validate their outputs match declared schemas
+2. **Match HTTP endpoint shapes** - health and status procedures return same data as existing `/health` and `/status` HTTP endpoints for consistency
+
+## Deviations from Plan
+
+### Auto-handled
+
+**1. [Rule 3 - Blocking] Task 1 already completed**
+- **Found during:** Task 1 verification
+- **Issue:** tRPC foundation files already existed from Plan 01.1-01 execution
+- **Resolution:** Verified existing files met Task 1 requirements, proceeded to Task 2
+- **Impact:** None - reduced work, no code changes needed for Task 1
+
+## Issues Encountered
+
+None - plan executed as expected.
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- tRPC router ready for HTTP adapter integration (Plan 01.1-06)
+- Type-safe contract established for CLI-server communication
+- Procedures match existing HTTP endpoint contracts
+
+---
+*Phase: 01.1-hexagonal-architecture*
+*Completed: 2026-01-30*